Multilayer packaging film having superior scratch resistance

Abstract

A sealable, transparent multilayer film comprised of a base layer, essentially of polypropylene, which is coated on both sides with further polyolefin layer is described. The base layer is coated on both surfaces with a layer of polypropylene which contains, as additives (i) 0.1 to 1% by weight of an inorganic pigment and (ii) 0.2 to 1% by weight of an oxyalkylamine, in each case relative to the total weight of the layer. Both free surfaces of the polypropylene layers are coated with a sealable covering layer which comprises a combination of (a) 68.5 to 89.7% by weight of an olefin resin composition comprising a copolymer or terpolymer of ethylene, propylene, butylene or further .alpha.-olefins having 5 to 10 carbon atoms or mixtures of these, (b) 5 to 15% by weight of a low molecular weight resin compatible with the olefin resin composition, (c) 5 to 15% by weight of a propylene homopolymer and (d) 0.3 to 1.5% by weight of polydiorganosiloxane, in each case relative to the total weight of the sealable covering layers.

Dependencies are inferred from the claim text.